Filled-sack-sewing machine.



- G. E. & E. D. SCOTT. FILLED SACK SEWING MACHINE.

1 APPLICATION FILED AUG..1, 1910. Patented Feb- 6 SHEETS-*SHEET 1.

G. E. & E. D. SCOTT. FILLED SACK SEWING MACHINE.

APPLIoATIoH FILED No.1, 1910 1,018,133. v Patented Feb. 20, 1912.

0 SHEETS-SHEET 2.

G. E. & E. D. SCOTT.

FILLED SACK SEWING MACHINE.

APPLICATION FILED AUG. 1, 1910.

yPatented Feb. 20, 1912.

6 SHEETS-SHEET 3.

Inl/anfora G. E. LQ-3. D. SCOTT. FILLED SACK SEWING MACHINE.

' APPLIOATION PIL-ED AUG. 1, 1910. v 1 ,O1 8,'1 33. Patented Feb. 20, 1912.

6 SHEETS-SHEET 4.

I Irwefa nf: Georgeb". .5606( 0g 15H/Www,

6 SHEETS-SHEET 5.

G. E. & E. D. SCOTT. FILLED SACK SEWING MACHINE.

APPLIoATIoH num AUG. 1, 1910.

Patented Feb. 20, 1912 wwwmwomw Q .u

r l@ m www G. B. & E. D. SCOTT. FILLED sAoK SEWING MACHINE.

APPLIUATION FILED AUG. 1, 1910.

1,018,1 33. Patented Feb. 2o, 1912.

5 B SEEETB-BHEET 6.

UNITED STATES PATENT OFFICE.

GEORGE E. SCOTT AND EDWARD D. SCOTT, 0F CHICAGO, ILLINOIS, ASSIGNORS TO TIME- WELL SACK FILLING & SEWING MACHINE COMPANY, 0F CHICAGO, ILLINOIS, A.

CORPORATION OF ILLINOIS.

FILLED-SACK-SEWING- MACHINE.

Specification of Letters Patent.

Patented Feb. 20,1912.

To all 'whom it 'may concern:

Be it known that we, GEORGE E. SCOTT and EDWARD D. SCOTT, citizens of the United States, residing in Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Filled-Sack- Sewing Machines, of which the following is a specification.

Our invention relates to improvements 1n filled sack sewing machines.

The object of our invention is to provide an automatic machine of a simple, eliicient and durable construction, by means of which filled sacks of various sizes may be rapidly and cheaply sewed.

The automatic machine containing the preferred embodiment of our invention comprises a sewing mechanism adapted to sw the mouth of a filled sack as it is conveyed past the same, and operating mechanism therefor, a vertically adjustable endless flexible sack conveyer for conveying the sacks past the sewing mechanism, power driven mechanisms for automatically adjusting the sack conveyer up and down to accommodate sacks of different lengths or sizes, power driven mechanism for automatically operating the Sack conveyer in different positionsv to which it may be adjusted by said adjusting mechanism, a pair of endless flexible sack holder chains furnished with removable clamps or holders for clamping together the mouth edges of sacks of dierent widths or sizes, means for automatically stopping and Starting said sack holder chains, guides for supporting and holding the parallel portions of said chains in sack clamping relation to each other, a yielding backing or support for one of said guides, a stop gage for the front edge ofthe sack mouth on one of said sack holder chains to insure theV sack mouth being `inserted in proper relation to each set of sack holders or clamps ou the chains, means for automatically stopping and starting the sack holder chains at the sack receiving position, means for automatically starting and stopping the sewing mechanism as each set of sack holder clamps on the sack holder chains presents a sack into sewing position with the needle of. the" sewing mechanism and delivers it therefrom, a thread chain or feeder and holder anda thread chain cutter and means for'au-l tomatically operating the said feeder 'and cutter.

Our invention consists in the various novel combination and subcombinations of these parts, and in the novel construction of parts and devices and novel combinations of parts and devices herein shown and described, and more particularly specified in the claims. v

In the accompanying drawing forming a part of this specification, Figure 1 is al plan view of a filled sack sewing .machine embodying `our inventio-n. F ig. 2 is a longitudinal vertical section on the broken line 2 2 of Fig. 1. Fig. 3 is a vertical cross section on line 3-'3 of Fig. 1. Fig. 4 is a horizontal section on line 4-4 of Fig. 3. Fig. 5 is a detail'plan view artly in horizontal section of the sack hol er mechanism. Fig. 6 is a detail plan view of a short portion of one of the sack holder chains. Fig. 7 is a detail elevation of a short portion of one of the sack holder chains. Fig. 8 is a detail plan View of the sewing mechanism partly in horizontal section. Fig. 9 is a detail plan of the thread feeder of the sewing mechanism. Fig. 10 is a detail Vertical section on line 10-10 of Fig. 8 showing the needle and other parts. Fig.' 11 is a detail vertical cross section on line 11-11 of Fig. 8. Fig. 12 is a detail View of the controlling device and other parts.

In the acoompanyin drawing forming a part of this specification, A represents the frame of the machine, it being of any desired construction suitable for giving support to and accommodating the various parts of the machine. It preferably has a bed member A1 resting uponv caster wheels A2 to enable the machine to be readily moved from one part of the factory to another, suitable uprights A3, cross frame members A4 A5, braces A", and a divided top plate A7 As with a slot or passage a between the two members A7 A8 of this top plate to accommodate the mouths of the sacks to be sewed, and raised connecting bridges A9 to secure the two members of the divided top plate rigidly and firmly together.

Bis a vertically adjustable endless flexible sack conveyer, the same preferably com-v prising a pair of chains b, the links of which are furnished with connecting slats b1 upon l the same preferably comp-rising two upright lifting screws B3, the threads of which turn in suitable nuts or threaded sleeves B4 on the conveyer frame B1, one on each side of the conveyer frame near the middle thereof, and which lifting screws B3 arejournaled at their upper and lower ends in suitable bearings B5 on the frame of the machine, and which lifting screws are provided at their lower ends with worm gears B3 which mesh with worms B7 on the cross shaft B3, which is furnished with bevel friction gears B3 adapted to engage a bevel friction gear B10 on a shaft B11, having at its upper end a bevel gear B12 meshing with a bevel gear B13 on the driving shaft C. The worm shaft B3 is adapted by a spline B31 to slide in the worm B7 to the very slight extent necessary to enable either one of the friction gears B3 to be thrown int-o and out of engagement with the friction gear B10, and thus clutch and unclutch the worm shaft BS from the shaft B11 which connects it with the driving shaft C. The worm shaft B8 is thus reciprocated when required to automatically connect the sack conveyer lifting or .adjusting screws with the power shaft by means of a foot lever or treadle B14, the shaft B13 of which has an arm B19 connecting with an arm B20 on the sleeve B13, said sleeve and fixed bearing B21 of the shaft B3 being furnished with interengaging devices B16 B17 preferably consisting of a cam slot in one member engaging a pin on the other. The operator by simply pressing his foot on the foot treadle can very quickly connect the lifting screws with the power shaft C either for raising or lowering the sack conveyer, one of the clutch acting friction gears B1 serving to turn the worm shaft B3 and lifting screws B3 in the direction necessary for raising the sack conveyer, and the other friction clutch acting gear B in the direction necessary for lowering the sack con veyer, according as the treadle B14 is rocked to one side or the other.

The endless flexible sack conveyer B is automatically driven or operated from the driving shaft C through suitable connecting mechanism, preferably comprising a pulley C1 on the driving shaft, belt- C2, a pulley G1 on the sewing mechanism shaft G2, a worm g on said shaft engaging a worm gear4 64 on the countershaft 65, which is imanes furnished with a bevel gear 63 engaging a bevel gear 67 on the cross shaft 63, and which meshes with a bevel gear 633 on the upright shaft 61, which is furnished with a spline 611 and sliding bevel gear 612, which meshes with a bevel gear 613 on shaft 614 which carries a sprocket wheel 615 connected by chain 616 with a sprocket gear 617 on the shaft 63 of the sack conveyer chains 6.

The endless flexible sack holder chains D D are mounted on horizontal pulleys or sprocket wheels D1 D1 D1 D1 and travel upon the top plate A7 A3, one on each side of the longitudinal slot or passage a; so as to clamp between them the mouth of the sack and hold itl in position for sewing as the same is conveyed past the sewing mechanism or needle. r

The adjacent parallel portions of the sack holder chains D are yieldingly held and guided in sack holding or clamping relation to each other by means of guides E E1 between which such adjacent parallel members of the chains D D pass, and one of these guides E1 has a spring or elastic backing or support, preferably consisting of coiled springs E1, surrounding screws E3 so as to cause the sack holder chains to exerta proper but yielding clamping pressure upon the mouth of the sack held between them.

Each of the sack holder chains D D is composed of a plurality of links ci, and these links are provided with removable and sectional sack clamping plates or devices d1, one preferably on each link, and removably secured thereto by screws, d3 so that a greater or less number of these sack holding clamp members or plates may be employed in each set according to the size or width of the sacks to be from time to time sewed in the machine. Each sack holding link d is preferably double, or composed of an upper and lower plate, which receive be tween them a connect-ing link d1, referably of circular disk form and to whic adjacent sack holding links are pivotally connected by pins.

As illustrated in the drawing, the sack holder chains are shown as being provided each with two sack holders, each sack holder having a series of twelve sack holding clamp members or plates d1, the series of twelve plates representing the width of the sack mouth intended to be sewed. If the sack mouth is narrower, a less number of clamp members or plates Z1 are employed in each sack holding set or series of plates, and if the sack to be sewed has a wider mouth, a

greater number of sack holding clamp members d1 are employed for each set or series. The sack holder plates al1 have corrugated, knurled or roughened opposing gripping faces d3 to cause them to have a greater gripping actioi on the fabric of the sack mouth,

and the sack holder links d are also preferably furnished with similarlv knurled or roughened faces de so that they may also exert a holding or gripping action upon the sack mouth. Each sack holder chain is also preferably furnished with one or more oblong or plain links ci? between adjacent sack holding se'ts or series of links d which carry the sack holding plates d1. The pulleys or sprocket wheels D1 for the sack holder chains D are furnshed with curved notches D2 for engagement with the circular or disklike links d1 of the sack holder chain.

Each of the sack holder plates or clamp members d1 of the chain D is preferably furnished with a notched portion d8 adapted to receive a similarly but lreversely notched portion Z9 of the plate of an adjacent link so that the adjacent plates d1 d1 may overlap each other and thus prevent the sack holder links from tilting one in respect to the other and thereby interfering with the proper gripping or holding action on the sack mouth.

Each set or series of sack holder links d and clamp members or plates d1 on one of the sack holder chains D is provided at or near the front end of the series with a gage or stop arm d10 for the front edge of the sackto abut against, and thus insure the sack mouth being inserted in a fixed and proper relation to eachsack holder set or series of links on the chains D D, and thus enable the sewing mechanism which is started or set in operation by each sack holder series of links as the same begins to pass the sewing mechanism and thus enable the sewing to begin properly at' the front edge of each sack mouth 1n the passing sack holder or series of sack holding links.

The front sack holding plates d1 of each sack holding set or series of links constituting a sackholder are furnished with inclined or cam-like .faces d which engage t-he movable starting device F mounted adjacent to the sack holder chains, and by which the sewing mechanism G is set in operation at the proper instant. The movable sewing mechanism starting lor controlling device F is preferably furnished with a spring f which returns it to normal position and stops the sewing mechanism after each sack holding series of links or plates (Z1 pass, the sewing mechanism thus being kept' in operation a greater or less time according to the number of plates d1 in each sack holder series of plates and according to the width of the sack to be sewed.

The sewing mechanism controlling device F preferably stops or starts and controls the operation of the sewing mechanism through a movable clutch f1 with which it is connected by a suitable clutch lever f2 and link f3.

The sewing mechanism may be of any a needle g1,looper g2,presser foot g2,driving pulley G3, shaft G2, and suitable gearing or connecting mechanism for communicating motion to the needle and looper from the shaft G2 of the sewing mechanism. The sewing mechanism shaft G2 receives its motion from the driving shaft C as before stated, through the belt C2 which may be shifted by hand when desired from the driving pulley G3 to a loose pulley G1 on the j shaft G2 by a belt shifter G5 having an operating lever G6 which the operator may actuate with his leg through a lever G7 and yoke G2. The-leg yoke G8 is fixed upon the upright rock shaft or pivot G of the lever G7,

and said lever carries at its inner end a pin G10 which works in a slot G11 of a guide lever G12 which engages the downwardly bent arm G13, of the bent lever G6, and .which bent arm G13 of said lever G6 projects in the path of the pin or projection 0315 on the clamp plate d1 of the chain D when said bent lever G6 stands in the position indicated in dotted lines on Fig. 1, or as more fully shown in Fig. 7.

The operation of the sewing mechanism is controlled or automatically stopped and started as each sack holder setor series of sack holding links on the chains yD D approach and leave or pass the sack sewing mechanism by the sewing mechanism controlling or stopping and starting device F before described.

The endless flexible sack holder chains D are automatically operated from the power shaft C through suitable operating or connecting mechanism, the same comprising preferably the means before described for communicating motion t-o the cross shaft 58 and bevel gears i12 on said cross shaft meshing with bevel gears 0313 on the upright shafts d 'of one pair of the sprocket wheels D1 of the sack holding chain D. j 1

The opposing endless iexible sack holding chains D are automatically stopped and started at the sack receiving posit-ion or just before the opposingpairs of front sack holding links and clamp plates d d1, one of which bears the gage 031 for the front edge of the sack 'to abut against, approach each other by any suitable connecting and disconnecting acting device in the mechanism which communicates motion from the power shaft to the sack holding chains D D; the same preferably or most often consisting in the belt shifter G5 and loose and fast pulleys G1 G3, one of the sack holding chains D being furnished with a pin or projection dni which engages the belt shifter lever G8 and operates the same to shift the belt from the fast pulley G3 to the loose pulley G1, thus stopping the machine. It is again started by the operator through the belt shifter lever, the same being preferably operated by him with his leg through the leg yoke attachment Gr8 on the beltshifter lever. The belt shifter lever is thus preferably operated by the leg as this leaves the operators two hands free for holding and entering the sack mouth between the sack holding chains D D. If the operator has a sack ready for entering its mouth between the sack holding chains D D, it will be found often unnecessary to stop the sack holding chains D D for entering the sack between them, and in such case he leaves the belt shifter lever Gr8 in such position that its depending arm G13 is out of the path of the projection d on the chain D or else, if that is necessary, moves the belt shifter lever with his leg clamp attachment so that the projection d on the chain D will not strike or operate the belt shifter lever to stop the machine.

H is the thread or chain feed or take up and holding device, the same preferably consisting of a pulley operating in conjunction with a spring supporting clamp H1 having springs h to give a yielding pressure of the clamp H1 against the feed or take up roller H. The feed or take up roller H has a shaft h1 furnished with a ratchet h2 which Ais operated by pawls h3 having a spring 7b4 and carried on a lever h5 and connected by a link 72,6 with an eccentric las on one of the shafts k7 of the sewing mechanism.

K K1 is the thread or chain cutter, the same preferably consisting of a pair of knives, one or both of which is moved or reciprocated in respect to the other to sever the thread or chain of stitching after each sack is sewed and after the sewing of the next succeeding sack be 'ns by means of springs K2 operating against the movable knife slides K3 which carry pins F2 having rollers F3 which engage sack holding links or clamp plates of one of the sack holding chains D, and thus retracting the knife slide during the sewing operation and permitting the spring to actuate the knife slide after the sewing operation is completed as before stated.

We claim 1. In a filled sack sewing combination with a sewing mechanism, of a horizontally movable endless flexible sack conveyer adjustable vertically and always remaining in a horizontal plane, means for raising and lowering the sack conveyer, means for propelling the sack conveyer, a driving shaft, and means for connecting machine, the

and disconnecting the driving shaft with said conveyer raising and lowering mechanism, said sack conveyer propelling means being operated from the driving shaft, substantially as specified.

2. In a filled sack sewing machine, the combination with a sewing mechanism, of an endless flexible sack conveyer, mechanism for propelling said conveyer, and reversible mechanism for automatically and positively raising and lowering the conveyer to any one of an unlimited number of positions, substantially as specified.

3. In a filled sack sewing machine, the combination with a sewing me-hanism, of

an endless flexible sack conveyer, mecha-v nism for propelling said conveyer, reversible mechanism for automatically and positively raising and lowering the conveyer, a power shaft and means for connecting and disconnecting said power shaft with the raising and lowering mechanism of said sack conveyer said means comprising a friction drive, substantially as specified.

4. ln a filled sack sewing machine, the combination with a sack sewing mechanism, of a sack conveyer, a power shaft, connecting mechanism for propelling the, sack conveyer from the power shaft andconnecting reversible mechanism for positively raising and lowering the conveyer from the power shaft said raising and loweringmechanism comprising rotatable screws, substantially as specified.

5. In a filled sack sewing machine, the combination with a sack sewing mechanism', of a sack convcycr` a power shaft, connecting mechanism for propelling the sack con veyer from .the power shaft and connecting mechanism for raising and lowering the entire conveyer from the power shaft provided with a connecting clutch for throwing said raising and lowering mechanism in and out of operation and a conveyer supporting frame supported centrally of the conveyer, substantiallv as specified.

6. Tn a filled sack sewing-machine. the combination with a sewing mechanism, of an endless flexible sack conveyer, a lifting screw for raising and lowering said conveyer, a power shaft and connecting gearing between the power shaft and lifting screw for operating the lifting screw from the power shaft. substantially as specified.

7. In a filled sack sewing machine, the combination with a sewing mechanism. of an endless fiexible sack conveyer, a lifting screw for raising and lowering said conveyer, a power shaft and connecting gearing between the power shaft and lifting screw for operating the lifting screw from the power shaft, said connecting gearing between the power shaft and lifting screw having means for turning the lifting screw in either directionas required to raise or lower the conveyer, substantially asy specied. v

8. Ina filled sack sewing machine, the combination with a sewing mechanism, of an endless flexible sack conveyer, a lifting screw for raising and lowering said conveyer, a power shaft and connecting gearing between the power shaft and lifting screw for operating the lifting screw from the power shaft, said connecting gearing comprising a friction gear and two movaccording as it is desired to raise or lower A15 the conveyer, substantially as specified.

GEORGE E. SCOTT. EDWARD D. SCOTT.

Witnesses: l

H. M. MUNDAY, PEARL ABRAMS. 

